From the series website: "The Mystery of Matter: Search for the Elements is a multimedia project about one of the great adventures in the history of science: the long (and continuing) quest to understand what the world is made of – to identify, understand and organize the basic building blocks of matter. In a nutshell, the project is about the human story behind the Periodic Table of the Elements.
The centerpiece of the project is a three-hour series that premiered Aug. 19, 2015 on PBS."